Fraternity members have been distributing fliers asking for the public's help to locate Culolias, whose Facebook profile has been filled with friends posting about his disappearance. A Facebook group, "Bring Jack Home," was also created.

"We were the ones who notified police; we were the ones who notified family," Alex Sabet, a fraternity member, told azfamily.com, an online news site.

According to his Facebook profile, Culolias was a student at Brea Olinda High School.